JP2512692B2 - Forming equipment for molding concrete products - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete apparatus for molding concrete products, for example, a hollow cylindrical body of a manhole and an inner wall portion of a hollow frustoconical cylindrical body installed at the upper end of the hollow cylindrical body. The present invention relates to one in which a substantially U-shaped step for ascending and descending is formed by projection.

[0002]

2. Description of the Related Art Conventionally, as a formwork apparatus for molding a hollow product of this kind, for example, an opening communicating with a cavity is formed at a predetermined position of a middle frame main body, and the middle portion is formed on both side edges of the opening. A support plate having a molding plate continuous to the molding surface of the frame body is detachably connected by bolts and nuts, and substantially U supported by the lower end edges of the opening on both sides of the lower end of the molding plate.
Fitting recesses that fit into both side legs of the U-shaped step are formed, and a mounting plate on which the substantially U-shaped step is mounted is projectingly provided on the support plate, and an upper end of an inner end of the mounting plate is formed. In addition, there is a structure in which the intermediate portion of the above step is sandwiched by bolts and nuts via a contact plate.

[0003]

In the above-mentioned structure, at the time of matching the mold and releasing the mold after molding, it is necessary to tighten and loosen the bolts and nuts that hold the intermediate portion of the step, and to loosen the mold. It is necessary to tighten and loosen the bolts and nuts for attaching and detaching both sides of the support plate having the plate to and from the opening of the middle frame body, and to move the forming plate up and down to fit the recesses on both sides. Since it is necessary to engage and disengage with the both side legs of the step, a lot of trouble is required for fastening and loosening a plurality of bolts and nuts when matching the mold and releasing the mold after molding. This is not desirable for improving work efficiency, and it is one of the causes of reducing the overall productivity because it is not uncommon to embed many steps in this type of hollow product. There is a problem that

The present invention has been made in view of the above circumstances, and can easily perform mold matching at the time of mold matching, can easily support a structure having an embedded portion, and can be separated after molding. In the mold, it is possible to easily release the mold while avoiding the embedded and fixed structure. Therefore, the mold matching operation and the mold releasing operation can be easily performed, and the work efficiency can be improved. Even in such a case, it is an object of the present invention to provide a mold device for concrete product molding which can improve the productivity as a whole.

[0005]

According to a first aspect of the present invention, there is provided a concrete frame forming apparatus for forming a concrete product, which is a cylindrical main body having an opening for forming a mold fitting hole communicating with the cavity, and a mold fitting of the main body. A first movable frame having a molding surface which is fitted in the horizontal direction so as to be capable of advancing and retracting in the horizontal direction and which has a molding surface continuous to the molding surface of the mold body in the outer side and a supporting surface which is inclined downward toward the outside at the upper end. A body, which is located above the first movable frame body and is vertically movably fitted to a mold fitting opening of the mold body, and has a molding surface of the frame body and a first movable frame on an outer side portion. A second movable frame body having a molding surface continuous with the molding surface of the body and having an engaging surface inclined downward toward the outside supported on the support surface of the first movable frame body at the lower end portion; A structure in which an embedded portion is supported by the upper end of the second movable frame and projects into the cavity. A body and a link mechanism pivotally supported in the left and right directions by the first movable frame body to move the second movable frame body up and down by the forward and backward movement of the first movable frame body in the horizontal direction. It is equipped with.

According to a second aspect of the present invention, in the apparatus for forming concrete products according to the first aspect, the second movable frame body is located above the second movable frame body with respect to the die fitting opening of the die body. And has a molding surface that is continuous with the molding surface of the mold body and the molding surface of the second movable frame body on the outer side and is rotatably fitted in the vertical direction, and the structure on the second movable frame body And a third movable frame body that is supported by the first movable frame body and is pivotally supported by the first movable frame body so that the third movable frame body moves up and down in the horizontal direction. And a rotating interlocking mechanism.

[0007]

In the concrete product forming mold apparatus according to claim 1, when the first movable frame body is advanced toward the mold fitting opening of the mold body at the time of mold matching, the lower part of the mold fitting opening is formed. The first movable frame body is fitted to and the molding surface of this first movable frame body is matched with the molding surface of the mold body in a continuous state.

[0008] Further, the first side toward the mold fitting opening of the mold body
Of the second movable frame body supported by the link mechanism of the first movable frame body, and the engaging surface of the lower end portion of the second movable frame body is the upper end portion of the first movable frame body. Of the second movable frame body is slid along the support surface of the first movable frame body and the second movable frame body is pushed up by the support surface via the engagement surface. And is fitted on the upper part of the mold fitting port.

Then, the molding surface of the second movable frame body is matched with the molding surface of the mold body and the molding surface of the first movable frame body in a continuous state. Further, the embedded portion of the structure supported by the upper end of the second movable frame is projected into the cavity.

Next, when releasing the mold after molding, when the first movable middle frame is retracted from the mold fitting port of the mold body, the first movable frame is removed from the lower part of the mold fitting port. , This first
Of the movable frame body, the support surface of the upper end portion is slid along the engagement surface of the lower end portion of the second movable frame body, and the molding surface of the first movable frame body is It is released from the molding surface of the second movable frame body and released.

In addition, from the bottom of the mold fitting opening of the mold body,
When the movable frame body is retracted, the second movable frame body is interlocked and lowered by the link mechanism of the first movable frame body, and the engaging surface at the lower end portion of the second movable frame body is retracted. Further, the second movable frame body is lowered and supported on the support surface of the upper end portion of the first movable frame body, and the second movable frame body is removed downward from the structure.

When the first movable frame body is further retracted, the second movable frame body is interlocked and retracted by the link mechanism of the first movable frame body, and the second movable frame body is released. Typed.

In the concrete product forming mold apparatus according to the second aspect of the present invention, when the first movable frame body is advanced toward the mold fitting opening of the mold body at the time of mold matching, the lower part of the mold fitting opening is formed. The first movable frame body is fitted to and matched with the mold, and a third interlocking mechanism pivotally supported by the first movable frame body
Of the movable middle frame is rotated downward, the third movable frame body is fitted to the upper end portion of the mold fitting port, and the molding surface of the third movable frame body is the molding surface of the mold body and the second molding frame. The mold is aligned with the molding surface of the movable frame body.

Further, when the first movable frame body is retracted from the lower part of the mold fitting opening of the mold body at the time of mold release after molding,
The interlocking mechanism pivotally supported by the first movable frame body causes the third movable frame body to rotate upward, and the third movable frame body is disengaged from the upper end portion of the mold fitting opening, and the third movable frame body is moved. The molding surface of the frame body is separated from the molding surface of the mold body and the molding surface of the second movable frame body, and is released from the mold.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The structure of an embodiment of the present invention will be described below with reference to the drawings.

First, the first embodiment will be described with reference to FIGS. 1 to 7. Reference numeral 1 is a surface plate composed of H-section steel.
A substrate 2 is integrally fixed to the upper surface of the surface plate 1. A guide long groove 3 which is long in the left-right direction is formed in an intermediate portion of the base plate 2, and guide rails 4 having a U-shaped cross section are formed on the surface plate 1 at lower portions on both sides in the width direction of the guide long groove 3. Are arranged and fixed integrally along the guide long groove 3.

Reference numeral 5 denotes a pedestal, which has front and rear side plates 6 disposed opposite to each other, and a supporting frame 7 is integrally fixed between one side portions of the front and rear side plates 6. At the same time, a vertical mounting plate 8 is integrally fixed to the other side of the front and rear side plates 6. Guide rollers 9 engaged with the guide rails 4 on both sides are rotatably mounted on the left and right portions of the front and rear side plates 6, respectively.

Further, a lower end portion of a column 10 vertically inserted by being inserted into the guide long groove 3 between the front and rear mounting plates 8 is pivotally supported by a front and rear shaft rod 11. ing.
The support column 10 is formed of a rectangular tube body 10a and a reinforcing plate 10b that divides the inside of the rectangular tube body 10a and is integrally fixed thereto.

Further, a prism-shaped connecting body 12 is integrally projected on the supporting frame 7 of the gantry 5, and a base end portion of an adjusting rod 13 which is horizontally arranged above the connecting body 12. Is rotatably inserted, and positioning flanges 14 engaged with the connecting body 12 are integrally fixed to the left and right portions of the base end portion of the adjusting rod 13. Further, a connecting piece 15 is integrally fixed to the vicinity of the lower end of the column 10 in the front-rear direction, and a block-shaped support body 17 is rotatably supported by a support shaft 16 between the front and rear connecting pieces 15. The screw shaft portion 18 at the tip of the adjusting rod 13 is rotatably and rotatably inserted into the support body 17, and is located outside the support body 17 so that the screw shaft portion 18 has a nut. 19 is screwed on.

Further, a nut body 20 is fixed in the supporting frame 7 of the gantry 5, and a screw shaft portion 22 of an operating rod 21 is rotatably screwed to the nut body 20 so that the operating rod 21 can be rotated. The operation portion 23 is rotatably inserted into the side frame 24 of the surface plate 1, and the side frame 24
The operating portion 23 is rotatably supported at a position where it is positioned by a positioning body 25 fixed to the. Then, the gantry 5 is advanced and retracted along the front and rear guide rails 4 via the front and rear, left and right guide rollers 9 by the turning operation of the operating rod 21, and the support column 10 supported by the gantry 5 is guided along the guide long groove 3. It is designed to move forward and backward.

Numeral 26 is an inner frame body formed in a cylindrical shape,
The middle frame 26 is installed on the substrate 2 with the pillar 10 arranged inside. The middle frame body 26 has a middle frame body 27 as a form body formed in a tubular shape, and the middle frame body 27 communicates with a cavity 29 formed between an outer mold body 28 described later. The mold fitting port 30 is formed in the vertical direction,
Engaging pieces 31 that are expanded and inclined toward the support column 10 are integrally formed at the opposite opening edge portions of the mold fitting opening 30.

An annular bottom plate 33 that closes the bottom of the cavity 29 is integrally formed horizontally in the vicinity of the lower end of the middle frame body 27, and a convex mold 34 is provided above the annular bottom plate 33. It is fixed. The annular bottom plate 33 is the substrate 2
It is supported by a reinforcement body 36 disposed in the.

Next, a plurality of first movable middle frame bodies 37 as first movable frame bodies are respectively movable in the horizontal direction in the die fitting opening 30 at predetermined intervals in the vertical direction. Each of the first movable middle frames 37 is fitted and supported integrally on the outer side of the support column 10, and the first movable middle frame bodies 37 are fitted by the forward and backward movement of the support column 10. It is adapted to be fitted back and forth in a horizontal direction with respect to the abutment 30.

Each of the first movable middle frame members 37 has an arc-shaped molding surface 39 continuous with the molding surface 38 of the middle frame body 27 on the outer side thereof.
And the mold fitting ports are provided at both ends of the arc-shaped molding surface 39.
Engagement plates 40 that engage with engagement pieces 31 at both ends of 30 in a disengageable manner are integrally formed so as to expand and incline toward the column 10, and the arc-shaped molding surface 39 and the engagement plates 40 at both ends. A support surface 41 inclined downward toward the outside is integrally formed at the upper end of the
A locking piece 42 is integrally projected on the upper inner end of the support surface 41.

A contact bottom plate 43 is horizontally and integrally formed at the lower ends of the arc-shaped molding surface 39 and the engaging plates 40 at both ends, and the plate body has the contact bottom plate 43 and the support surface 41. A reinforcing plate 44 in the up-and-down direction is spaced apart in the front-rear direction and is integrally fixed between the two. Sliding grooves 45, which are long in the left-right direction, are formed parallel to each other on both sides of the plate body having the support surface 41, which is located near the upper ends of the front and rear reinforcing plates 44. Then, the inner end portion of the locking piece 42 and the contact bottom plate
The inner end of 43 is integrally fixedly supported on the outer side of the column 10.

Next, a second movable middle frame 46 serving as a second movable frame is located above each of the first movable middle frames 37.
Is fitted to the mold fitting opening 30 so as to be vertically movable and to be able to move back and forth in the horizontal direction. This each second movable middle frame 46
Has an arc-shaped molding surface 47 continuous to the molding surface 38 of the middle frame body 27 and the arc-shaped molding surface 39 of the first movable middle frame body 37 on the outer side thereof. Engagement plates 48, which engage with engagement pieces 31 at both ends of the mold fitting opening 30 in a disengageable manner, are integrally formed on both ends so as to be expanded and inclined toward the support column 10.

Further, a mounting plate 49 is integrally formed horizontally in the vicinity of the upper ends of the arc-shaped molding surface 47 and the engaging plates 48 at both ends, and a mounting plate 49 is provided on the upper part of the inner end of the mounting plate 49. The stopper 50 is integrally projected. An engaging surface 51 slidably supported on the supporting surface 41 of the first movable middle frame 37 is provided at the lower end of the arc-shaped forming surface 47 and the engaging plates 48 at both end portions on the outer lower side. The upper end of the inner end of the plate having the engaging surface 51 is integrally formed continuously with the lower end of the locking piece 50. Further, engaging recesses cut downward are formed on both sides of the upper end of the arc-shaped molding surface 47 in the front-rear direction.
52 are formed respectively.

Further, between the plate body having the engaging surface 51 and the mounting plate 49, vertical reinforcing plates 53 are separated from each other in the front-rear direction and integrally fixed to each other. Further, the engaging surface 51 is located near the upper and lower ends of the front and rear reinforcing plates 44.
The upper and lower communication grooves 54 and 55, which communicate with the sliding groove 45 of the first movable middle frame 37, are parallel to the both sides of the plate body having the above and the mounting plate 49, respectively. Has been formed.

Further, 56 is a link mechanism for moving the second movable middle frame body 46 up and down by advancing and retracting the first movable middle frame body 37 in the horizontal direction. A support shaft 57 in the front-rear direction that is horizontally mounted between the intermediate portions of the front and rear reinforcing plates 44 of the movable middle frame body 37 and the second movable middle frame body 46.
A horizontal support shaft 58 is horizontally mounted between the front and rear reinforcing plates 53, and the upper and lower support shafts 57 and 58 are vertically rotatably supported in the vertical direction. It has a pair of links 59 that are long in the direction.

The pair of links 59 are formed in a substantially V-shape when viewed from the side, and their lower ends rotate in the left-right direction at both ends of the support shaft 57 of the first movable middle frame 37. It is rotatably supported, and its upper portion is slidably inserted in the sliding groove 45 and the upper and lower communication grooves 54, 55 in the left-right direction, and the middle portion thereof is of the second movable middle frame body 46. Engagement protrusions 60 formed on the upper ends of the support shafts 58 are rotatably supported by the opposite ends of the support shaft 58 in the left-right direction, and protrude upward from the upper communication groove 55.

Further, 61 is a step body as a structure,
The step body 61 is formed in a substantially U shape in a plan view, and both side leg portions 63 projecting from both ends of the step portion 62 in parallel.
An embedded portion 64 projecting into the cavity 29 is bent and formed at the tip of the.

The step body 61 is placed on the placing plate 49 of the second movable middle frame body 46, and the base ends of the embedded portions 64 at both ends thereof are the second movable middle frame. The step portion 62 is fitted into the engaging recesses 52 formed on both side portions of the body 46, and the step portion 62 is brought into contact with the locking piece 50 of the mounting plate 49, and the step portion 62 includes the pair of The link 59 is supported by the engaging projection 60.

A mounting plate 49 for the second movable middle frame 46 is also provided.
When the step body 61 is placed on the step body 61, the contact bottom plate 43 of the first movable middle frame body 37 located above the second movable middle frame body 46 is contacted and supported from above. It has become.
Then, in a state where the second movable middle frame bodies 46 on which the step bodies 61 are mounted on the first movable middle frame bodies 37 and the mounting plate 49 are fitted in the mold fitting opening 30, Each molding surface 39, 47 is continuous with the molding surface 38 of the middle frame body 37.

Further, the outer mold body 28 is constructed by detachably connecting a semicircular outer mold formed in two. After the product is molded, the semicircular outer mold is separated and the mold is opened.

Next, the operation of the above embodiment will be described.

At the time of mold matching, the step bodies 61 are placed on the placing plates 49 of the respective second movable middle frames 46, and the base end portions of the embedded portions 64 at both ends of each step body 61 are respectively set. The second movable middle frame 46 is fitted into the engaging recesses 52 on both sides of the second movable middle frame 46, and the step portions 62 thereof are brought into contact with the locking pieces 50 of the mounting plate 49.

Next, when the operating rod 21 is rotated by the operating portion 23, the gantry 5 is pulled toward the operating portion 23 along the operating rod 21 via the nut body 20 screwed to the operating rod 21. Is
The gantry 5 is moved along the front and rear guide rails 4 of the surface plate 1 via the front, rear, left and right guide rollers 9, and the stanchions 10 erected on the gantry 5 are connected to the die fitting port of the middle frame main body 27. 30
Will be moved towards.

When the column 10 is moved on the gantry 5,
The first movable middle frame bodies 37 fixedly supported on the support columns 10 and the second movable middle frame bodies 46 on the first movable middle frame bodies 37 are fitted into the mold fitting openings 30 of the middle frame body 27. Be advanced toward. Then, each first movable middle frame body 37 is fitted into the mold fitting port 30, and the molding surface 39 of each first movable middle frame body 37 is the middle frame body.
The molding surfaces 38 of 27 are matched with each other in a continuous state.

When each first movable middle frame body 37 is advanced and fitted toward the mold fitting opening 30 of the middle frame body 27, each first movable
Of the second movable middle frame bodies 46 supported by the link mechanism 56 of the movable middle frame bodies 37 of FIG.
The second movable middle frame body 46 is slid along the support surface 41 at the upper end of the 37, and the second movable middle frame bodies 46 are pushed up by the respective support surfaces 41 via the engagement surface 51. The first movable middle frame bodies 37 of the middle frame body 46 are matched with each other in the mold and fitted into the mold fitting opening 30.

Then, the molding surface 47 of each second movable middle frame 46
Are continuously aligned with the molding surface 38 of the middle frame body 27 and the molding surface 39 of each first movable middle frame body 37. Further, each step body 61 supported on the mounting plate 49 of each second movable middle frame body 46.
The embedded portions 64 at both ends of the step body 61 are projected into the cavity 29 formed between the step body 61 and the outer die body 28.
The step portion 62 is sandwiched between the locking piece 50 of each mounting plate 49 and the engaging projection 60 of each pair of links 59, and the upper portion of each step body 61 is in the second movable state. It is supported by the contact bottom plate 43 of each first movable middle frame body 37 located above the frame body 46.

Therefore, the first movable middle frame bodies 37 and the second movable middle frame bodies 46 are alternately fitted in the mold fitting opening 30 of the middle frame body 27 in the vertical direction, whereby Molding surface 39 of first movable middle frame body 37 and molding surface 47 of each second movable middle frame body 46
The intermediate frame body 26 is formed by mold matching with the molding surface 38 of the intermediate frame body 27 in a continuous state.

At this time, the first movable middle frame body 37 and the first movable middle frame body 37 and the respective first movable middle frame bodies 37 are provided on both side edges of the mold fitting opening 30 of the middle frame main body 27 while having the engaging pieces 31 which are expanded and inclined inward. 2 movable middle frame
Since there are engaging plates 40 and 48 that expand and incline toward the inside for engaging with the engaging pieces 31, the first movable middle frame body 37 and the second movable frame bodies 37 and 46 When the movable middle frame bodies 46 are fitted, the engagement plates 40 of the first movable middle frame bodies 37 and the second movable middle frame bodies are engaged with the engagement pieces 31 on both side edges of the mold fitting opening 30. 46
The engagement plate 48 of is taper-fitted, and the die fitting port 30
The engagement of the first movable middle frame bodies 37 and the second movable middle frame bodies 46 with respect to the mold fitting opening 30 is determined by the engagement pieces 31 on both side edges.

An annular cavity 29 is formed between the cylindrical inner frame body 26 and the outer mold body 28, and both ends of each step body 61 are embedded at predetermined positions in the cavity 29. The portion 64 is supported in a protruding state. Then, concrete is sufficiently placed in the cavity 29 and on the top plate 32 of the middle frame 26 to be cured.

Next, at the time of mold release after molding, the operation unit
When the operating rod 21 is rotated in the direction opposite to the above in 23, the pedestal 5 is separated from the operating portion 23 along the operating rod 21 via the nut body 20 screwed to the operating rod 21. The pedestal 5 is moved backward along the guide rails 4 on the front and rear of the surface plate 1 via the front and rear, left and right guide rollers 9, and the stanchions 10 erected on the pedestal 5 are centered. The frame body 27 is moved in a direction away from the mold fitting port 30.

When the column 10 is moved on the gantry 5,
Each of the first movable middle frames 37 fixedly supported by the support column 10 comes off from the mold fitting port 30 of the middle frame body 27, and the support surface 41 of the upper end of each of the first movable middle frames 37 is at the top. Each second movable middle frame 46
The molding surface 39 of each first movable middle frame body 37 is slid along the engagement surface 51 at the lower end of the middle frame body 27 and each second movable middle frame body 46. It is released from the surface 47 and released from the product.

From the mold fitting port 30 of the middle frame body 27, the first
When the movable middle frame body 37 is retracted, the pair of links 59 of each first movable middle frame body 37 causes the support shaft 57 of each first movable middle frame body 37 to move.
While being rotated downward around the center, the support shaft 60 of the reinforcing plate 53 in front of and behind the second movable middle frame 46 is connected by the pair of links 59.
The second movable middle frame bodies 46 are interlocked and lowered through the upper ends of the first movable middle frame bodies 37 with the lower end engaging surfaces 51 of the second movable middle frame bodies 46 retracted. It is lowered and supported on the support surface 41 of the section.

The engaging recesses 52 on both sides of each of the second movable middle frame members 46 are removed downward from the base end portions of the embedded portions 64 at both ends of each step member 61, and each second The locking piece 50 of the movable middle frame body 46 is disengaged downward from the inside of the step portion 62 of each step body 61. When the pair of links 59 of each first movable middle frame body 37 is rotated downward, the engaging protrusions 60 of each pair of links 59 are moved downward from the outer side of the step portion 62 of each step body 61. Come off. Therefore, from each step body 61 in which the embedded portions 64 at both ends are embedded and fixed to the product, each second movable middle frame body 46 that supports each step body 61.
Is released downward, and each of the second movable middle frame members 46 is prepared for releasing in the horizontal direction.

Then, the first movable middle frame body is formed on each of the columns 10
When 37 is further retracted, each second movable middle frame body 46 is retracted by interlocking with each second movable middle frame body 46 by the link mechanism 56 of each first movable middle frame body 37. Is released from the product.

Next, the outer mold body 28 is separated and released from the product, and the product is pulled up above the inner frame body 26 and released from the inner frame body 26. This product is formed as a tubular body having open upper and lower surfaces, and a large number of step bodies 61 are integrally provided at upper and lower sides of one side of the inner wall of the product at predetermined intervals. In addition, a fitting recess is formed by an annular projecting mold 34 at one opening edge of this product.

In the first embodiment described above, a case where a large number of step bodies 61 are integrally embedded in a tubular product whose upper and lower surfaces are open at intervals in the vertical direction has been described. Without being limited thereto, for example, a plurality of step bodies 61 may be integrally embedded and formed above and below a hollow substantially frustoconical product installed at the upper end of the tubular product of the above-mentioned embodiment. An embodiment will be described as a second embodiment with reference to FIGS. 8 to 14. In the second embodiment, the same parts as those of the first embodiment will be described with respect to the first embodiment.
The reference numerals used in the examples are described and the description thereof is omitted.

First, a mold 70 having a substantially elliptical shape is installed and fixed on the upper surface of the surface plate 1, and a concave mold 71 is formed in a ring shape on the upper surface of the mold 70. Further, the front and rear guide rails 4 are arranged and fixed to the upper part of the surface plate 1 located inside the mold body 70 via a support frame 72 so as to be inclined rearward and upward. The lower end of the column 10 is pivotally supported on the surface plate 1 by a support shaft 73 in the front-rear direction so as to be rotatable in the left-right direction. Further, a handle 74 is integrally projecting upward at the upper end of the column 10, and bearing pieces 75 are provided at the upper end of the column 10 and at the upper and lower portions spaced downward from the upper end. 76 are formed to face each other.

The middle frame body 27 as the mold body of the middle frame body 26 has a semi-cylindrical portion 27a formed in a substantially semicircular shape in plan view on the left half thereof. A semi-cylindrical inclined portion 27b, which is widened and inclined downward in a plan view, is provided on the right half that is continuous with the portion 27a, and is formed in a generally hollow truncated cone shape. Further, a mold fitting port 30 communicating with the cavity 29 is formed in the vertical direction in the half-cylindrical portion 27a on the left half of the middle frame body 27, and this mold fitting port 30 is formed.
Engaging pieces 31 are formed at the front and rear opening edges facing each other so as to be expanded and inclined toward the pillar 10.

Engagement recesses 78 are formed on both sides of the lower end edge 77 of the mold fitting port 30 in the front-rear direction. The semi-cylindrical portion is located between the engagement recesses 78 on both sides. Reinforcement support plates 79 are integrally projecting in parallel with each other inside the arc-shaped plate body having the molding surface 38 of 27a in front and rear.
Fitting recesses 80 are formed on the upper portions of the inner ends of 79. In addition, the upper ends of the front and rear reinforcing support plates 79 are formed in the same plane as the lower edge portion 77, and the inner lower ends of the front and rear reinforcing support plates 79 are in contact with the upper part of the surface plate 1. It is supported.

Both side legs 63 of the step body 61 as a structure are detachably fitted and supported in the front and rear fitting recesses 80, and the step body 61 is fitted in the front and rear engaging recesses 78. The base ends of the embedded portions 64 at both ends of the are fitted and supported in a detachable manner.

Next, at the lower end edge portion 77 of the die fitting opening 30 and the upper ends of the front and rear reinforcing support plates 79, a first movable frame as a first movable frame body with respect to the die fitting opening 30 is provided. A frame body 37 is fitted so as to be movable back and forth in the horizontal direction. A guide groove that is long in the left-right direction is provided in the upper part of the reinforcing plate 44 in front of and behind the first movable middle frame 37.
81 are formed parallel to each other, and one end of a pair of interlocking pieces 83 is rotatably attached to both ends of the front-rear direction interlocking shaft 82 that is inserted into the front and rear guide grooves 81 so as to advance and retract. The other end of the pair of interlocking pieces 83 is rotatably supported by a support shaft 84 between the front and rear bearing pieces 76 at the lower part of the support column 10.

Support projections 85 are integrally formed on the upper inner ends of the front and rear reinforcing plates 44 so as to project upward. Further, between the abutting bottom plate 43 and the plate body having the support surface 41 located on the outer side of the front and rear reinforcing plates 44, a support substrate 86 disposed so as to face the front and rear is integrally fixed. Guide rollers 87 engaged with the front and rear guide rails 4 are rotatably mounted on the left and right portions of the lower end of the front and rear support substrates 86, respectively, and the lower inner end portions of the front and rear support substrates 86 are provided. In the middle of the inclined edge inclined toward
Are formed.

Further, stoppers 89 that engage with the left and right engaging pieces 31 are integrally fixed to the lower ends of the left and right engaging plates 40 of the first movable middle frame 37.

Next, a second movable middle frame body 46 as a second movable frame body is formed on the upper part of the first movable middle frame body 37 as a second movable frame body by a link mechanism 56. The step body 61 as a structure is mounted on the mounting plate 49 of the second movable middle frame 46 so as to be vertically movable and movable in the horizontal direction with respect to the fitting opening 30. The step portion 62 of the step body 61 is configured to be sandwiched by the locking piece 50 at the inner end portion of the mounting plate 49 and the engaging projection 60 at the upper end portions of the pair of links 59, and The embedded portions 64 at both ends of the body 61 are adapted to project into the cavity 29.

A third movable middle frame body 90 serving as a third movable frame body is vertically rotatable with respect to the mold fitting port 30 above the second movable middle frame body 46. It is fitted.
The third movable middle frame body 90 has the middle frame body on the outer side thereof.
It has an arc-shaped molding surface 91 that is continuous with the molding surface 38 of 27 and the arc-shaped molding surface 47 of the second movable middle frame 46, and both ends of the arc-shaped molding surface 91 have the mold fitting port 30. Engagement plates 92 that engage with the engagement pieces 31 at both ends in a disengageable manner are integrally formed so as to be expanded and inclined toward the pillar 10.

Further, on both sides of the arc-shaped molding surface 91 in the front-rear direction, from above, the embedded portions 64 at both ends of the step body 61 placed on the second movable middle frame body 46 are engaged. Engaging recesses 93 are formed respectively. Further, a contact plate 94 is located between the inner end portion of the plate body having the arc-shaped molding surface 91 located above the engagement recesses 93 on both sides and the front and rear engagement plates 92.
Are integrally fixed to each other, and are located above the contact plate 94 and have the inner end portion of the plate body having the arc-shaped molding surface 91 and the front and rear engagement plates 92.
A top plate 95 is integrally fixed between and.

Further, an interlocking plate 96, which is spaced apart in the front-rear direction, is integrally protruded inward between the contact plate 94 and the top plate 95. The lower end of the protruding piece 97 protruding downward from the inner end is pivotally supported by a support shaft 98 on the front and rear supporting projections 85 of the first movable middle frame 37 so as to be vertically rotatable. ing. Also, the front and rear protruding pieces
A pair of links 100 is attached to the upper end of 97 with a longitudinal support shaft 99.
One end of each of the links is pivotally supported in the vertical direction, and the other ends of the pair of links 100 are supported by a support shaft 101 in the front-rear direction.
The front and rear bearing pieces 75 formed at the upper end of the shaft 10 are pivotally supported in the vertical direction. And the support shaft in the front-back direction
An interlocking mechanism 102 for rotating the third movable middle frame 90 in the vertical direction about the support shaft 98 is constituted by 99, the pair of links 100, and the column 10.

Next, 103 is a holding jig for holding and supporting the first movable middle frame 37 and the third movable middle frame 90,
The holding jig 103 has a jig main body 106 formed of front and rear supporting frames 104 that are long in the left-right direction and left and right connecting pieces 105 that connect the front and rear supporting frames 104. Engagement recesses 107 that engage with both sides of the inner edge 95a of the top plate 95 of the third movable middle frame 90 are formed at one end of the front and rear supporting frames 104.
And the supporting substrates 86 in front of and behind the first movable middle frame 37 are formed at the lower ends of the opposing projecting portions 108 projecting downward from the other ends of the front and rear supporting frames 104.
Front and rear engagement pins that engage with the contact recesses 88 formed on the
The 109 are opposed to each other and project integrally.

Further, between the upper ends of the other ends of the front and rear supporting frames 104, one ends of front and rear connecting pieces 111 are respectively pivotally attached by a front and rear connecting shaft 110 so as to be vertically rotatable. An interlocking shaft 112 in the front-rear direction is mounted between the other ends of the connecting pieces 111, and one end of a pushing screw rod 113 in the left-right direction is integrally fixed to an intermediate part in the front-rear direction of the interlocking shaft 112. A lock nut 114 is screwed to the other end of the push screw 113 so as to move back and forth.

An insertion hole 115 is formed in the other end of the pushing screw rod 113 so that the other end of the pushing screw rod 113 can be moved back and forth.
A connecting body 116 having a connecting member 116 is provided, one end of an adjusting screw 117 is inserted into the insertion hole 115 of the connecting member 116 so as to be able to move forward and backward, and the other half of the adjusting screw 117 has the half-cylinder inclined portion 27.
An engaging projection 119 is formed which engages with an engaging recess 118 of the reinforcing frame 27c of b in a disengageable manner, and a lock nut 120 is screwed to the adjusting screw 117 so as to be able to move forward and backward.

Further, 121 is an upper lid body which is detachably fitted to the upper end portion of the middle frame body 26, and this upper lid body 121 has a lid body 122 formed in a substantially conical shape. An annular edge frame having an annular fitting recess 123 that fits into the upper end of the molding surface 38 of the middle frame body 27 and the upper end of the molding surface 91 of the third movable middle frame body 90 at the lower end edge of 124 is integrally formed. In addition, a handle is provided at the center of the lid body 122.
125 are projected integrally.

Next, the operation of the above embodiment will be described.

At the time of mold matching, both side leg portions 63 of the step body 61 are fitted into the front and rear fitting recesses 80 at the lower end of the mold fitting opening 30, and the embedded portions 64 of the step body 61 are fitted into the front and rear engaging recesses 78. By engaging the base ends, the step body 61 is set on the front and rear reinforcing support plates 79 with the embedded portions 64 on both sides protruding into the cavity 29. In addition, the second movable middle frame 46
Place the step body 61 on the mounting plate 49 of the
The upper step body 61 is set on the placing plate 49 by bringing the step portion 62 of the 61 into contact with the locking piece 50 at the inner end of the placing plate 49.

Next, the pillar 10 is attached to the middle frame 26 with the handle 74.
When the column 10 is operated toward the mold fitting port 30, the column 10 is rotated around the support shaft 73 at the lower end toward the model fitting port 30, and the support shaft 84 pivotally attached to the column 10 moves the column 10 to the first position. The front and rear interlocking pieces 83 of the first movable middle frame 37 are pushed outward, and the interlocking shafts 82 of the front and rear interlocking pieces 83 are moved to the first movable middle frame.
It is moved outward along the guide grooves 81 of the reinforcing plate 44 in front of and behind 37.

When the interlocking shaft 82 is brought into contact with the outer ends of the front and rear guide grooves 81 in the moving direction, the first movable middle frame body is moved by the interlocking shaft 82 via the front and rear reinforcing plates 44. 37 is the mold mating port 30
This first movable middle frame body is pushed toward
37 is moved by being guided by the front and rear guide rails 4 via the front and rear and left and right guide rollers 87 of the front and rear support substrates 86, and the front and rear engaging plates 40 of the first movable middle frame 37 are connected to the mold fitting port 30. While being deeply engaged with the front and rear engagement pieces 31, the front and rear stoppers 89 of the first movable middle frame 37 are locked to the inner end portions of the front and rear engagement pieces 31 of the mold fitting opening 30. As a result, the movement of the first movable middle frame body 37 is stopped, and the first movable middle frame body 37 is placed in the lower part of the die fitting opening 30.
The movable middle frame body 37 is fitted.

Then, the molding surface 39 of the first movable middle frame 37 is formed.
The lower end portion of the first movable middle frame body 37 is engaged with the lower end edge portion 77 of the mold fitting port 30, and the molding surface 39 of the first movable middle frame body 37 is the molding surface 38 of the middle frame body 27.
And the lower step body 61 is contacted and supported by the contact bottom plate 43 of the first movable middle frame 37 from above.

Further, the first movable middle frame 37 is fitted into the mold fitting port 30, and the second movable middle frame 37
The front and rear engaging plates 48 of the movable middle frame body 46 are deeply fitted to the front and rear engaging pieces 31 of the mold fitting opening 30, so that the molding surface 47 of the second movable middle frame body 46 becomes the middle frame body. The molding surface 38 of 27 and the molding surface 39 of the first movable middle frame body 37 are matched with each other.

At this time, on the supporting surface 41 of the first movable middle frame 37 in a state where the molding surface 39 of the second movable middle frame 37 is continuous with the molding surface 39 of the first movable middle frame 37. When the second movable middle frame 46 is placed, the first movable middle frame 37 is fitted into the mold fitting port 30 and at the same time the second movable middle frame 46 is fitted into the mold fitting port 30. Is fitted to. The step portion 62 of the upper step body 61 set on the placing plate 49 of the second movable middle frame body 46 has the engaging protrusions 60 of the pair of links 59 and the locking piece 50 of the placing plate 49. The embedded portions 64 on both sides of the step body 61 are projected into the cavity 29.

Further, the first movable middle frame body 37 is supported in a state where the molding surface 47 of the second movable middle frame body 46 projects outward from the molding surface 39 of the first movable middle frame body 37 and is not continuous. When the second movable middle frame body 46 is placed on the surface 41, the first movable middle frame body 37 is moved toward the die fitting opening 30 to first move the second movable middle frame body 37. Engagement plates 48 at the front and rear of the middle frame body 46
The second movable middle frame 46 is deeply engaged with the front and rear engaging pieces 31 of
Is fitted into the mold fitting opening 30.

Next, the first movable middle frame 37 is moved toward the die fitting port 30 while the supporting surface 41 slides along the engagement surface 51 of the second movable middle frame 46. At the same time, the second movable middle frame 46 is pushed up along the mold fitting opening 30 by the supporting surface 41 and fitted into the mold fitting opening 30. Also, the second movable middle frame
When the first movable middle frame body 37 is moved toward the mold fitting port 30 while pushing up the 46, upper and lower support shafts provided on the first movable middle frame body 37 and the second movable middle frame body 46. The pair of links 59 is rotated inwardly about 57 and 58, and the engaging projections 60 at the upper ends of the pair of links 59 are placed on the mounting plate 49 of the second movable middle frame body 46. It is greatly projected.

Then, the first movable middle frame 37 is attached to the mold fitting port 30.
And the step portion 62 of the upper step body 61 set on the placing plate 49 is clamped by the engaging projections 60 of the pair of links 59 and the locking pieces 50 of the placing plate 49. The embedded portions 64 on both sides of the step body 61 are projected into the cavity 29.

Further, when the first movable middle frame 37 is moved toward the mold fitting port 30 by the handle 74 via the column 10 and the front and rear interlocking pieces 83, the bearing piece at the upper end of this column 10 The pair of links 100 is pushed by the support shaft 101 which is hung between the 75, and the interlocking plates 96 before and after the third movable middle frame 90 are pushed by the pair of links 100. Front and rear interlocking plate 96
Is rotated downward toward the mold fitting port 30 and the second movable middle frame body 46 around the support shaft 98 between the support projections 85 protruding from the front and rear reinforcing plates 44 of the first movable middle frame body 37. To be done.

The front and rear engaging plates 92 of the third movable middle frame 90 are engaged with the front and rear engaging pieces 31 of the mold fitting port 30 to move the third movable middle frame 90 to the mold fitting port 30. Is fitted to
Engagement recesses 93 before and after the molding surface 91 of the third movable middle frame 90.
Are fitted from above into the base ends of the embedded portions 64 on both sides of the step body 61 placed on the second movable middle frame body 46, and the front and rear engaging recesses 93 and the second movable middle frame are formed. The base ends of both embedded portions 64 of the step body 61 are clamped by the upper end of the molding surface 47 of the body 46. Then, the molding surface 91 of the third movable middle frame body 90 is matched with the molding surface 38 of the middle frame body 27 and the molding surface 47 of the second movable middle frame body 46.

In this way, the mold fitting port 30 of the middle frame main body 27
The first movable middle frame 37, the second movable middle frame 46, and the third
The movable middle frame members 90 are sequentially fitted and matched with each other,
Each molding surface 38, 39, 47, 91 is matched in a continuous state,
The middle frame 26 is simply configured by these.

Next, it is formed at one end of the supporting frame 104 before and after the holding jig 103 with respect to the front and rear of the inner edge 95a of the top plate 95 formed on the third movable middle frame 90. Supporting substrates before and after engaging the engaging recess 107 with the first movable middle frame 37
The support frame 104 before and after the holding jig 103 with respect to the contact recess 88 of 86.
The other end of the adjusting screw rod 117 of the holding jig 103 is engaged with the engaging recess 109 of the semi-cylindrical inclined portion 27b of the middle frame main body 27 while engaging the engaging pin 109 protruding from the other end of the holding jig 103. The engaging projection 119 formed on the above is engaged.

Then, the lock nut 114 of the pushing screw rod 113 and the lock nut 120 of the adjusting screw rod 117 inserted from both sides into the insertion hole 115 of the connecting member 116 are respectively rotated and pushed through the connecting member 116. By adjusting the screw rod 113 and the adjusting screw rod 117 so as to move back and forth in a direction in which the screw rod 113 and the adjusting screw rod 117 are separated from each other, the engaging concave portion 107 of the pressing jig 103 is attached to the front and rear portions of the inner end edge portion 95a of the top plate 95.
However, for the contact recesses 88 of the front and rear support substrates 86, a holding jig
The engaging pins 109 at the front and rear of 103 are strongly pressed against and supported by the engaging projections 119 of the adjusting screw rod 117 of the pressing jig 103 with respect to the engaging recesses 118 of the half-cylinder inclined portion 27b. The first movable middle frame body 37, the second movable middle frame body 46, and the third movable middle frame body 90, which are fitted into the mold fitting opening 30 of the middle frame body 27 by the holding jig 103, are It is surely supported in the shape-matched state.

Further, with respect to the upper end portion of the molding surface 38 of the middle frame body 27 in the middle frame body 26 and the upper end portion of the molding surface 91 of the third movable middle frame body 90, the annular edge frame 124 of the lid body 122 is provided. The formed annular fitting recess 123 is fitted, and the upper lid 121 closes the upper end opening of the middle frame body 26.
The upper end opening of the middle frame 26 is reinforced and held by.

Then, as in the case of the above-mentioned embodiment, the middle frame body
A cavity 29 is formed between the outer mold body 26 and the outer mold body 28, and the embedded portions 64 on both sides of the upper and lower step bodies 61 are formed in the cavity 29.
The concrete is poured into the cavity 29 to be cured, and at this time, the first movable middle frame body 37, the second movable middle frame body 46 and the third movable middle frame body 37 are moved by the holding jig 103. Middle frame 90
Is supported, so that the first movable middle frame 3
7. The second movable middle frame body 46 and the third movable middle frame body 90 can sufficiently withstand the pouring pressure of concrete.

Thus, the hollow truncated cone-shaped product to be installed on the upper end of the cylindrical product of the above-mentioned embodiment is molded, and the step body 61 is provided above and below the vertical part of this product. The step portion 62 is integrally embedded and formed in a protruding state.

Next, at the time of releasing from the mold after molding, the lock nut 114 of the pushing screw rod 113 and the lock nut 120 of the adjusting screw rod 117 are rotated respectively to rotate the pushing screw rod 113 and the adjusting screw rod 117 via the connecting body 116. By adjusting the and to move toward each other, the engaging concave portions 107 of the holding jig 103 from the front and rear portions of the inner end edge portion 95a of the top plate 95 to the contact concave portions of the front and rear supporting substrates 86.
The engaging pins 109 on the front and rear of the holding jig 103 extend from the engaging recess 118 of the half-cylinder inclined portion 27b to the adjusting screw 11 of the holding jig 103.
The engaging projections 119 of 7 are disengaged, and the holding jig 103
Can be easily removed from the inner frame body 27.

When the handle 74 is rotated inwardly in the direction away from the mold fitting port 30 about the support shaft 73 with the handle 74, the shaft is provided between the bearing pieces 75 at the upper end of the support column 10. The pair of links 100 is pulled by the suspended support shaft 101, and the third movable middle frame body 90 is connected by the pair of links 100.
The front and rear interlocking plates 96 are pulled, and the front and rear interlocking plates 96 are centered on the support shaft 98 between the front and rear support protrusions 85 of the first movable middle frame 37 and the die fitting opening 30 and the second movable middle. It is rotated upward from the frame 46 in the releasing direction.

The front and rear engaging plates 92 of the third movable middle frame 90 are disengaged from the front and rear engaging pieces 31 of the die fitting opening 30
While the movable middle frame body 90 is released from the mold fitting opening 30,
Engagement recesses 93 before and after the molding surface 91 of the third movable middle frame 90.
Is disengaged from the base end portions of the embedded portions 64 on both sides of the step body 61 on the second movable middle frame 46, and the clamping of the base end portions of both embedded portions 64 of the step body 61 is released. Then, the third movable middle frame
The molding surface 91 of 90 is released from the molding surface 38 of the middle frame body 27 and the molding surface 47 of the second movable middle frame body 46.

Further, the support column 10 is rotated inward around the support shaft 73 at the lower end by the handle 74, and at the same time,
The front and rear interlocking pieces 83 of the first movable middle frame 37 are pulled inward by the support shaft 84 pivotally attached to the column 10, and the interlocking shafts 82 of the front and rear interlocking pieces 83 are moved first. When brought into contact with the inner ends of the guide grooves 81 of the reinforcing plate 44 at the front and rear of the middle frame 37, the interlocking shaft 82
The first movable middle frame 37 is pulled inward through the front and rear reinforcing plates 44 in the direction away from the mold fitting port 30. The rollers 87 are guided by the front and rear guide rails 4 and moved inward.

The front and rear engaging plates 40 of the first movable middle frame 37 are disengaged from the front and rear engaging pieces 31 of the mold fitting opening 30, and the supporting surface 41 of the first movable middle frame 37 is removed. Is slid inward along the engaging surface 51 of the second movable middle frame body 46, and the contact bottom plate 43 of the first movable middle frame body 37 is the lower step body.
When the step body 61 is released from above, the nipping of the lower step body 61 is released, and the molding surface 39 of the first movable middle frame body 37 is released from the molding surface 38 of the middle frame body 27.

When the support surface 41 of the first movable middle frame 37 is slid inward along the engaging surface 51 of the second movable middle frame 46, the first movable middle frame 37 is moved. On the support surface 41 of the middle frame body 37, the second movable middle frame body 46 is gradually lowered via the engagement surface 51,
The mounting plate 49 of the second movable middle frame body 46 is the upper step body.
When the upper step body 61 is released from the lower side of 61, the support of the upper step body 61 is released, and the second movable middle frame body 46 is supported by the support shaft 57 between the reinforcing plates 44 at the front and rear of the first movable middle frame body 37. The engaging projections 60 at the upper ends of the pair of links 59 are pivoted outward around the support shaft 58 between the front and rear reinforcing plates 53.

Then, the engaging projections 60 of the pair of links 59.
Is rotated downward from the mounting plate 49 of the second movable middle frame 46,
The engaging protrusions 60 of the pair of links 59 are the second movable middle frame body 46.
The upper part of the step plate 61 on the mounting plate 49 is disengaged downward from the step part 62 of the step body 61, and the pinching of the step part 62 of the step body 61 is released.

When the first movable middle frame 37 is further pulled inward by the pair of links 100 pivotally supported above and below the support column 10 by the handle 74 and the front and rear interlocking pieces 83. The engaging projections 60 of the pair of links 59 pivotally supported by the upper and lower support shafts 57, 58 are engaged with the outer end portions of the front and rear sliding grooves 45 of the mounting plate 49 of the second movable middle frame body 46. In the combined state, the second movable middle frame body 46 is interlocked with the first movable middle frame body 37 by the pair of links 59, and is further pulled inward. Engaging plates 48 at the front and rear of the body 46 are engaging pieces at the front and rear of the mold fitting port 30.
The second movable middle frame 46 is released from 31 and released from the mold fitting port 30.

Therefore, by rotating the support column 10 with the handle 74, the first movable middle frame body 37, the second movable middle frame body 46 and the third movable middle frame body 90 are moved to the middle frame body 27. It is easily released from the mold fitting port 30 of.

Next, the outer mold body 28 is separated and released from the product, and the product is pulled up above the inner frame body 26 and released from the inner frame body 26. An annular convex portion is formed by the concave mold 71 of the mold body 70 at the lower end portion of this product, and a fitting step portion is formed by the annular edge frame 124 at the upper end portion of this product. The step body is on the upper and lower parts of the inner wall of the vertical part.
61 is integrally projected. Then, by fitting the annular convex portion formed at the lower end portion of this product into the fitting concave portion formed at the opening edge portion of the cylindrical body having the open upper surface formed in the above-mentioned embodiment, A series of manholes having a predetermined height can be freely configured, and the upper surface of the manhole can be closed by fitting the lid to the fitting step of the upper end of the product.

Next, in each of the above-described embodiments, the case where the step body 61 having the embedded portions 64 as a plurality of structures is supported on the middle frame body 27 of the middle frame body 26 for molding a tubular concrete product has been described. However, not limited to this, the step body 61 having the embedded portions 64 as a plurality of structures is, for example, the outer mold body 28 for molding a tubular concrete product or the outer mold body for molding a concrete product such as an L-shaped retaining wall. A plurality of movable frame bodies may be used for the mold body to support the mold body.

Further, in each of the above-described embodiments, the case where the step body 61 is used as the plurality of structures has been described, but the present invention is not limited to this, and the embedded portion and the concrete product embedded in the concrete product arranged in the cavity 29. Any structure may be used as long as it has a protruding portion that protrudes from the cavity 29. For example, a part of the reinforcing bar that is disposed in the cavity 29 and embedded in the concrete product may be a protruding bar that protrudes to the outside of the cavity 29. .

[0096]

According to the first aspect of the invention, the first movable frame body is fitted in the mold fitting opening of the mold body so as to be movable back and forth in the horizontal direction, and the first movable frame body is outside. Has a molding surface that is continuous with the molding surface of the mold body, has a support surface that is inclined downward toward the outside at the upper end, and is positioned above the first movable frame body, Second to mold fitting port
The movable frame body is vertically movably fitted to the second movable frame body, and the second movable frame body has a molding surface continuous to the molding surface of the mold body and the molding surface of the first movable frame body on the outer side and the lower end portion. Has an engaging surface that is supported on the support surface of the first movable frame and is inclined downward toward the outside, and has a structure in which an embedded portion is projected into the cavity at the upper end of the second movable frame. A link mechanism that supports the body and that vertically moves the second movable frame body by moving the first movable frame body in the horizontal direction is pivotally supported in the first movable frame body in the left-right direction. Because it was done, the first
The movable frame body and the second movable frame body can be easily matched with the mold fitting opening of the mold body, and the structure having the embedded portion protruding into the cavity can be easily supported. When releasing from the mold after molding, the embedded part can be embedded and fixed in the product to avoid the structure protruding from the inner wall, and the mold can be easily released. Therefore, the mold matching operation and the mold releasing operation in the case where a large number of structures are integrally formed on the inner wall of the product by projecting, the productivity can be improved as a whole.

According to the second aspect of the present invention, the third movable frame body is vertically rotatably fitted to the mold fitting opening of the mold body located above the second movable middle frame body. The third movable frame body has a molding surface on the outer side that is continuous with the molding surface of the mold body and the molding surface of the second movable frame body, and the structure on the second movable frame body is located above. And the first movable frame body is rotatably rotatably supported on the first movable frame body by moving the first movable frame body in the horizontal direction to vertically rotate the third movable frame body. At the time of mold matching, the mold can be easily matched by lowering and rotating the third movable frame body on the second movable frame body. The structure can be securely clamped, and when the mold is released after molding, the third movable frame is raised and rotated to easily release the clamp of the structure. The mold can be easily fixed by burying the embedded part in the product and avoiding the structure protruding from the inner wall, and the structure can be integrally molded on the tapered inner wall of the product. The aligning operation and the releasing operation can be easily performed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a concrete product forming frame device showing a first embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of the same as above assembled state.

FIG. 3 is an enlarged sectional view of a part of the same.

FIG. 4 is an enlarged cross-sectional view showing a link mechanism supporting the same structure.

FIG. 5 is a cross-sectional plan view of line a-a of the above.

FIG. 6 is a cross-sectional view showing a release state of the first movable frame body of the above.

FIG. 7 is a cross-sectional view showing a lowered state of a second movable frame body of the above.

FIG. 8 is an exploded perspective view of a concrete product forming form device showing a second embodiment of the present invention.

FIG. 9 is a vertical sectional view showing an assembled state of the same.

FIG. 10 is an enlarged cross-sectional view showing a state where the movable frame bodies are matched with each other.

FIG. 11 is a side view of the same holding jig.

FIG. 12 is an explanatory cross-sectional view showing a mold matching state of each movable frame body of the above.

FIG. 13 is an explanatory cross-sectional view showing a released state of the third movable frame body of the above.

FIG. 14 is an explanatory sectional view showing a released state of each movable frame body of the above.

[Explanation of symbols]

 27 Formwork Main Body 29 Cavity 30 Mold Fitting 37 First Movable Frame 38 Molding Surface 39 Molding Surface 46 Second Movable Frame Body 47 Molding Surface 51 Engagement Surface 56 Link Mechanism 61 Step Body as Structure 64 Embedded Section 90 Third movable frame 91 Forming surface 102 Interlocking mechanism

Claims (2)

(57) [Claims] 1. A mold main body having an opening formed with a mold fitting opening communicating with a cavity, and a mold fitting opening of the mold main body, which is fitted in the mold fitting opening so as to be capable of advancing and retracting in the horizontal direction, and is molded on the outer side of the mold main body. A first movable frame body having a molding surface continuous to the surface and a support surface at the upper end portion which is inclined downward toward the outside, and a mold of the mold body located above the first movable frame body. The outer surface has a molding surface continuous with the molding surface of the mold body and the molding surface of the first movable frame body, and is fitted to the fitting opening so as to be vertically movable, and the lower end portion of the first movable frame body has a molding surface. A second movable frame body supported on a support surface and having an engagement surface inclined downward toward the outside, and a structure supported by an upper end portion of the second movable frame body and projecting an embedded portion into the cavity. A body and a first movable frame that is rotatably supported in the left-right direction by the first movable frame body. Frame concrete products molding form device which is characterized in that anda link mechanism for vertically moving the second movable frame member by advancing and retracting movement in the horizontal direction. 2. A molding surface of the mold body and a molding surface of the mold body, which is located above the second movable frame body and rotatably fitted in a mold fitting opening of the mold body in a vertical direction. A third movable frame body that has a molding surface that is continuous with the molding surface of the movable frame body and that supports the structure on the second movable frame body from above, and is pivotally supported by the first movable frame body. 2. A concrete product molding method according to claim 1, further comprising: an interlocking mechanism that vertically moves the third movable frame body by moving the first movable frame body forward and backward. Formwork device.